def build_profile(first, last, **user_info):
    """ 创建一个字典，其中包含我们知道的有关用户的一切 """
    profile = {}
    profile['first_name'] = first
    profile['last_name'] = last
    for key, value in user_info.items():
        profile[key] = value

    return profile


user_profile = build_profile(
    'albert', 'einstein', location='princeton', field='physics')

print(user_profile)
